Steel 85
Designation
| Name |
The value |
| Designation GOST Cyrillic |
85 |
| Designation GOST Latin |
85 |
| Transliteration |
85 |
| The chemical elements |
85 |
Description
85 steel is used: for the manufacture of springs, friction disks and other parts, which are requirements of high strength and elastic properties and wear resistance; blades of earth-moving machinery (bulldozers, scrapers, graders and graders, as well as to the dozer and grader blades equipment excavators, rollers and other earth moving machines); springs and measuring tapes.
Note
Steel spring carbon.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 17152-89, GOST 2590-2006, GOST 2591-2006, GOST 2879-2006 |
| Tapes |
В34 |
GOST 2283-79 |
| Steel wire medium- and high-carbon |
В72 |
GOST 7348-81, GOST 9389-75, GOST 26366-84 |
| Sectional and shaped rolling |
В32 |
GOST 7417-75, GOST 7419-90, GOST 8559-75, GOST 8560-78, GOST 14955-77, GOST 14959-79, TU 14-1-2118-77, TU 14-11-245-88, TU 14-1-1271-75, TU 14-136-367-2008 |
| Sheets and stripes |
В23 |
GOST 82-70, GOST 103-2006 |
| Sheets and stripes |
В33 |
TU 14-1-1022-74, TU 14-1-1133-74, TU 14-1-2650-79, TU 14-1-466-72 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
| GOST 17152-89 (ИСО 7129-82 |
0.82-0.9 |
≤0.035 |
≤0.035 |
0.5-0.8 |
≤0.25 |
0.17-0.37 |
≤0.25 |
The rest |
≤0.2 |
| GOST 14959-79 |
0.82-0.9 |
≤0.035 |
≤0.035 |
0.5-0.8 |
≤0.25 |
0.17-0.37 |
≤0.25 |
The rest |
≤0.2 |
Fe is the basis.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
d4 |
y, % |
Brinell hardness number, MPa |
HRC |
| Cold-rolled steel strip of 0.1-4.0 mm according to GOST 2283-79 on delivery |
| 0.1-4 |
- |
740-1180 |
- |
- |
- |
- |
- |
| 0.1-4 |
- |
≤740 |
- |
≥10 |
- |
- |
- |
| 0.1-4 |
- |
≤670 |
- |
≥10 |
- |
- |
- |
| Tape. Quenching in water from 1000 °C + Quenching in water from 870 °C to + Vacation at 250 °C |
| ≤1 |
≥1650 |
≥1750 |
- |
≥9 |
- |
- |
47 |
| Wire. Quenching in oil from 920 °C (tмасла=40 °C, exposure for 1 min) + Vacation at 500 °C (15 min excerpt) air cooling |
| ≤6.5 |
- |
≥1540 |
≥5 |
- |
≥42 |
399 |
- |
| Rolled steel. Steel categories: 3, 3A, 3B, 3C, 3D, 4, 4A, 4B. Quenching in oil from 820 °C to + Vacation at 470 °C |
|
≥980 |
≥1130 |
≥8 |
- |
≥30 |
- |
- |
Description mechanical marks
| Name |
Description |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d4 |
Elongation after rupture |
| y |
The relative narrowing |
| HRC |
Rockwell hardness (indenter diamond spheroconical) |
Physical characteristics
| Temperature |
Е, ГПа |
G, ГПа |
| 0 |
191 |
76 |
A description of the physical symbols
| Name |
Description |
| Е |
The normal elasticity modulus |
| r |
Density |
| l |
Coefficient of thermal conductivity |
| R |
UD. the resistivity |
| a |
The coefficient of linear expansion |
Technological properties
| Name |
The value |
| Weldability |
does not apply to welded structures. |
| Propensity to temper brittleness |
tend not |
| Forging temperature |
Start - 1180 °C, the end - of 800 °C. the cross Section up to 220 mm are cooled in the wells. |
| Flock-sensitive sensitivity |
insensitive |
